Driving mechanism for drawing-through drums of wire-drawing machines.



7 I PATENTBD SEPT. 10, 1907. W. CARTER & E. HODGSON. DRIVING MEGHANIGM FOR DRAWING THROUGH DRUMS 0F WIRE DRAWING MACHINES.

urmon'zox rmzn 1110.24, 1905.

muvme Mechanism FOR DRAWING-THROUGH DRUMS or WIRE-DRAWING MACHINES.

, the following is a specification.

. ED A STATES- ATENT oF IoE.

wooDHoUsE CARTER, or VICTORIA MILLS, LowMooR, AND EDWIN Honosomon OLEQK- I HEATON, ENGLAND. I

Specification of Letters Patent.

v Patented Sept. 10, 1907.

.lvplication filednugust 24.1905. Serial-No. 275,697. e

To cll'whom it may concern: I

Be'it known-that we, WOODHOUsE CARTER and En- WIN Honoso'N, subjects of the King of'Great Britain Improvements in Driving Mechanism for Drawing- Through Drums of Wire-Drawing Machines ofwhich .Thisinvention has for its object, the rotation of the drawing-through drums in continuous wire drawing machines, in such a manner that each [drawing-through drum is driven at a'speedcorresponding to the reduction" and elongation of the wire as it is drawn through the holes of the respective reducing plates, by driving gear so arranged that should the circumferential speed of any of. the drawing-through drums beretarded, the

rotation of each of the successive drawing-through drums will be automatically and proportionatelyincreased, and thereby assist the retarded drawingthrough drum in drawing the wire through the reducing plate, and maintain an equalization of tension, and

prevent undue tension being put upon the wire by any of the drawing-through drums, to. such an extent as to endanger breakage of the wire, -on the removal of lubricant from same by slipping around the drawingthrough drum.

Providing .the circumferential speed of allthe gear driven drawing-through. drums in continuous wire drawing machines could be definitely adjusted to take up the wire as reduced and elongated, and at the same time maintain an equal tension on the 'wire, a main driving shaft made in a continuous length and geared for positively operating the drawing-through drums could be utilizedwithout detriment to the wire, and no special attention of the workman would be required for adjusting the tension, as is now the case with machines in which the drawing-through drums are definitelydriven from a continuous shaft.

By our invention, the rotation of the drawing-through drums is automatically controlled, and the tensionon the wire automatically adjusted, in accordance with the constantly varying speed at which the wire is drawn through the respective reducing plates, and thereby slipping-around the saiddrums prevented. -In describing our invention in detail, reference is made to the accompanying drawings, in which Figure 1 represents a side elevation of a continuous wire drawing machine, of a length for drawing the wire compensating gear. Fig.4 is a sectional view through line 0, d. of Fig. 3, and Fig. 5 a back view of the cage, showing spring operated pawls mounted thereon.

The drawing-through drums 1. 1 1 and 1 a'reof the usual construction, and of such diameters as to approximately take up the wire as it is elongated similar to ordinary definitely driven continuous Wire drawing machines; each drawing-through drum being secured to a shaft 2, but the angular velocity of drum 1 exceeds that of drum 1. and so on to 1 so that when drawing wire, pawls 12 at short intervals, slip over one or more teeth of the internal racks 9 by which'the speed of succeeding drum ordrums is accelerated, and tension on the wire maintained throughout the machine. The angular velocity of drum 1. is greater than that V oi-the preceding drum, and receives the reduced Wire around its circumference.

The main driving. shaft is made in sections, four sections or'lengths are enumerated by the drawings, 4.

4 4 and 4 these may be increased in number.

Each section is in axial line and supported by'pedestals 5,'the last'drum i being driven by an ordinary bevel wheel Akeyed oil-shaft 4, and gearing with wheel B asshown. .fEhefirst length 'of sectional shaft rotates in I the direction of the arrow 2 and may be rotated in any convenient manner,-and on all the sections but the last there is keyed the boss 6 of a flanged cagfi, constructed for the reception of planet gears 7 freely mounted on studs 8 secured to said cage. Upon each boss Gniounted free to rotate, is a bevelwheel Qgearing with a bevel wheel 10, secured on the respective drawing-through shafts 2. The bevel wheel 9 is connected to or integral with an internal rack 9 with which planet gears 7 mesh.

' One end of section 4 of main drivingshaft, and each succeeding section as shown by 4' in Fig. 4, is by -preference extended into the shaft hole of adjoining boss 6' for support, and-upon 4 and each succeeding section,

is keyed a sun gear wheel 11, of such diameter as to mesh with planet gears 7, such asshown, or two planet gears may be cast side by side, concentric with each other, one to mesh with rotary internal lack 9* as described, and the other say of smaller diameter, to mesh with a sun gear Wheel similar to 1], but larger in diameter. H At tzfe back of llanged' cage 6 one or more recesses are su k for the reception of pawls 12 and springs 13, applied so as to force the ends of said pawls into contact with theteth of internal rack 9 for the purpose as hereinafter described. 4

"On beginning to draw a length of wire, a portion'is reduced iii the same manner as when preparing wire for tlie'feeding up of a continuous wire drawing machine of 'tlre ordinary description, any known method for such purpose is suitable. A sufficient length of wire is drawn chineruns at its normal condition the pawls 12 slip over the teeth of internal racks 9', during the wire drawing. The action of the machine is as follows :-Motion from the first length 4 of sectional shaft is transmitted to drawing-through drum 1, by bevel gears 9 and 10, the

former being freely mounted upon boss 6 keyed to section 4 of main shaft, from which rotary motion is conveyed tobevel gear-wheel 9 and other parts of the machine in the following manner. 7 i

On reference to Figs. 3 andf4, the flanged cage 6 is shown partly within the internal rack 9* integral with bevel gear wheel 9, and is presumed to be rotating in the direction of curved arrow-2; When the machine is 7 in motion, should a drum, say 1* be abnormallylretarded by the pull of wire, pawls 1.2 will slip over more teeth of internal rack 9 than when the pull is under normal conditions and by this abnormal retardation the planet gears 7 which revolve about the stud 8 when the machine is running at normal speed will rotate faster and in thesame direction upon the stud 8 and thereby increase the angular velocity of sun gear I] in the direction of arrow 2, by'which the speed of the succeeding drums is accelerated, and assistance given to drum 1.

Pawls 12 shown by dotted lines in Fig. 3, are engaged with the teeth of internal rack 9 in a manner for admitting the drawing-through drums to revolve in the direction for drawing and elongating thewire W, and

for preventing internal rack 9- and bevel wheel 9 re 4 0 volving at a greater angular speed in the direction of the arrow 2 than the flanged cage upon Whose boss the bevel wheel 9 is revolubly mounted and for preventing the corresponding sun gear 11 becoming stationary and thereby preventing the subsequent sections of the machine stopping whenever there is. no tension or pull'on a particular drawing-through drum, such as when said drum'is running empty when the wire is broken or becoming exhausted. Should the wire to be drawn be broken, or the supply exhausted, say at drum 1, there- 0. mainder of the drums will continue to rotate and draw thewire to a' finish This is accomplished by the teeth of internal rack 9 engaging with pawls 12, and thereby preventing bevel wheel 9 o'vorrunning in the direction of arrow 2. Y

Y I Flanged cage (3 through planet gears 7, is the driv of pawls lZand ends of same engaging with the 'teethof internal rack 9 overrunningv is prevented as" before mentioned.

, From the description given, it will be seen, if the rotation of drum 1 and thereby bevel wheel 9 be retarded, i

the speed of the subsequent drums will be increased, andby'the accelerated speed of drum-1 the tension or pull on wire Wbet ween drumsl and 1 will be in-' creased, and thefrotation or' las't named drum correspondingly assisted,. by which slipping oi the wire around drum lwill be'prevented, and a more equalization of tension maintained. -As drum 1 regains 1ts nor- .mal speed, the rotation of sun gears 11 and planet to an extent that, slipping around the drums is pre-' vented. 1 What We claim is 1, in ,H'ICOHUDUOUS wire drawing machine, the combine tion of aplurality of reducing plates and drawing-through d1'urns,-a series of sectional Tshafts in alinement, a gear supportingicage' secured to each sectional shaft except the last planet gears revolubly supported thereon, an internal rack revolubly mounted a1'ound each sectional shaft: upon.

which a gear cage is secured, said rack meshing with planet gears and supporting a bevel wheel arranged to mesh with a likewheel secured on respective drawingthrough drum shaft, 8. sun gear secured ,to succeeding -sectional= shaft upon which the aforesaid gear cage is secured,- said sun gear meshing with planet gears, and a v driving connectlombetween the first and lust length of sectional shafts. v

2. In a continuous wire rawing machine, the combination with a plurality of reducing plates and drawing through drums, a series of sectional shafts in alin ement, a

gear cage secured to each sectional shaft except the last length, planet gears :carried by each cage revolubly supeach cage, pawls carried therehyengaging with respective internal racks, said racks meshing with planet gears, means for transferring vrotary movement to the drawingthrough druins', a sun gear secured to adjacent sectional shaft meshing with preceding planet gears. and a driving connection between the first and subsequent sections of driving shafts and drawing-through drums.

3--In a continuous wire drawing machine, the combina; tion of a plurality of reducing plates and drawing-through drums, a series of'sectional driving shafts in ailucment, a

gear cage secured to one of the sectional shafts, a planet gear revolubly supported thereon, an internal rack revolubly mounted aroundthe sectional shaft upon which the gear cageis secured, said internal rack arranged to mesh with the-,planehgear, a bevel gear supported by said internal rack member and, arranged so as to mesh with the bevel gear which is on one of the shafts for driving a drawingthrdugh drum, a sungear secured to the sectional shaft which is adjacent-said sectional shaft upon which the aforesaid gear cage is .mounted, sald-su n gear arranged to'mesh with said planet gear, and a driving connection between the last mentioned sectional shaft and a second drawing-through drum.-

In witness whereof we have hereunto set our hands in the presence of two witnesses.

' WOODHOUS'E CARTER.

EDWIN HODGSON. Witnesses WM. ILLINGWORTI-I, -ALFRED DEAN.

ported thereon, an internal ,raclr revolubly mounted upon- 

